there is an irrepressible tendency in every man to develop himself according to the magnitude which Nature has made him of; to speak out, to act out, what nature has laid in him. This is proper, fit, inevitable; nay it is a duty, and even the summary of duties for a man. The meaning of life here on earth might be defined as consisting in this: To unfold your self, to work what thing you have the faculty for.
Heroes and Hero-Worship (1840) - The Hero As King